Question

d. 2 True or False i. Any metal alloy that contains iron will make a good permanent magnet ii. A compass held near to a wire carrying an electric current will always point north iii. The strength of the magnetic field in a solenoid can be increased by increasing the current, making more loops in the coil, and putting a rod of steel inside the coil to stop iv. Electromagnets can be used in many devices such as loudspeakers and electric motors. v. The recording material on a hard disc is magnetic. it collapsing.​

Answer 1

Answer:

1. true

2. false

3. true

4. true

5. true